leech

"While swimming in the lake, I felt a leech attach itself to my leg. "

"He never pays for lunch; he's a leech who always expects his friends to cover his bill. "

"The doctor used a leech to draw out the fluid from the swelling on her injured ankle. "

"The doctor leeched the patient to help reduce swelling. "

"Bert leeched hundreds of files from the BBS, but never uploaded anything in return."

"The leech prescribed antibiotics for the student's infected finger. "

"In the Viking village, the villagers trusted Astrid, the leech, to mend their wounds and ease their ailments. "

"The doctor will leech the infection from the wound. "

"The sailor adjusted the tension on the leech of the square sail to catch more wind. "

"The sailor carefully adjusted the leech of the triangular sail to catch the wind. "